Machine for helically grooving tubes.



No. 812A3. PATENTED FE'BQ13, 1906. R. G. MONTBAGLE: MACHINE FOR HELIGALLY GROOVING TUBES.

APPLICATION FILED APB..29.1904.

. its center.

ROBERT CHARLES MONTEAGLE, OF NEW HALF TO EMMA MANN VYNNE,

YORK, N. Y., ASSIGNOR oE oNE- oE NEW YORK, N. Y.

MACHINE FOR HELICALL Y GROOVING TUBES.

Specification of Letters Patent.

Application-filed April 29, 1904. Serial No. 205,491.

Patented Feb 13, 190.6.

To all whom it may concern:

Be it known that I, ROBERT CHARLES MoNTEAGLE, a citizen of the United States, and a resident of New York, in the county and State of New York, have invented certain new and useful Improvements in Machines for Helically Grooving Tubes, of which the following is a specification.

My invention relates to machines for grooving tubes.

t has for its object to provide a machine for helically grooving tubes, comprising dieholders each having a plurality of dies and means for moving tubes between said dies.

It has for a further object to provide a device of the character set forth possessing advantages in point of perfect operation, adjusta'bility, simplicity, and inexpensiveness.

In the drawings, Figure 1 is a side elevation of the machine, partly broken away near Fig. 2 is an end view of one of the die-holders with the cheek-plate removed. Fig. 3 is a horizontal sectional view thereof. Figs. 4, 5, and 6 are views of the tube as it appears in the different stages of the operation. Figs. 7, 8, and 9 are detail views of the die for helically grooving the tubes; Fig. 10, a View of the plain die.

Corresponding parts in all the figures are denoted by the same reference characters.

Referring to the drawings, 1 designates the table of my machine, atthe ends of-the top of which grooved pulleys 3 and 4 are journaled in bearings 5 and 6, respectively, and centrally beneath the table a power-shaft 7 is journaled in bearings 8 and has a grooved pulley 9 secured thereon.

The die-holders 10 and 11, having dies 12 and 13, respectively, are secured centrally side by side to the top of the table, and between said holders and the pulleys 3 and 4 are secured turning devices 14 and 15, having spirally-threaded holes 16, engaged by spirally-threaded rods 17 and 18, respectively, having clamps'1'9 on their inner ends adapted to clamp the ends of the tube 20 to be operated upon between them.

A flexible steel rope 21 is wound around the pulley 9, and one end is connected to the outer end of the rod 17 and the other end to the rod 18, and upon the revolution of the pulley 9 by power applied to the shaft 7 the rope will be pulled over the pulleys 3 and 4 in one direction, drawing the rods 17 and 18 through the turning devices 14 and and the tube through the dies 12 and 13 in the die-holders 10 and 11, and on account of the engagement between the turning devices and the rods passing therethrough said-rods will be turned in their passage therethrough, thereby turning the tube 20 in its passage through the dies 12 and forming a helical groove therein.

Each die -holder consists of -a stationary plate or member 22 and an oscillatory ring'or member 26, the stationary member being provided with a hole 23 therethrough for the passage of the tube to be operated upon and a circulargroove 24 and radial grooves 25 in one face, and the oscillatory member, which is mounted in the circular groove 24 in the stationary member, has cam-grooves 27 in one face engaged by lugs 28 upon the outer ends of the dies, whereby they are reciprocated, a segment of a worm-gear 29 on its periphery engaged by a worm 30, journaled on the stationary member, whereby the ring 26 is oscillated, and stops 31, also on its periphery, adapted to come into contact with stop-plates 32 to regulate the movement of the ring 26, said stop-plates 32 being adjustably secured to the projecting through elongated slots 34 therein and into holes in the plate 22, and a checkplate 35 is secured to the grooved face of the stationary plate 22.

The operation is as follows: Assuming that the parts are in the position shown in full lines, Fig. 1, with the dies 12 in operativeposition and the dies 13 out of operative -pos i-' tion, upon the revolution of the pulley 9 to the left the tube 20 will be drawn through the dies 12 and turned in its passage therethrough by means of the turning devices 14 and 15, thereby forcing the metal of the tube in and'forming helical grooves of a depth and shape governed by the shape of the dies 12. This furnishes the first part of the operation, if the grooves are to be shallow; but if they are to be deep the worm 30 is turned, forcing the dies 12 farther in, and the pulley 9 is then turned to the right, drawing the tube back through the dies and leaving it in the condition shown by Fig.5, with a helicallygrooved portion and unreduced end portions. To finish the. operation, the dies 12 are then thrown out of operative position and the plate 22 by screws 33,

plain-faced die 13 thrown into operative position, after which the tube is drawn through the dies 13, which draw down the unreduced end portions, leaving the tube in its comleted condition. (Shown by Fig. 6.)

I do not desire to be understood as limiting myself to the details of construction and arrangement as herein described and illustrated, as it is manifest that variations and modifications may be made in the features of construction and arrangement in the adaptati )11 of the device to various condltions of with a central hole,

' ing the tube through holes, means for drawing use without departing from the spirit and scope of my invention and im rovements. I therefore reserve the right to a 1 such variation and modification as properly fall within the scope of my invention and the terms of the following claims.

Having thus described my invention, I claim and desire to secure by Letters Patent-' 1. A machine for helically grooving tubes, comprising a table, die-holders fixed thereon each having a central hole, dies in said holders projecting into said hole, means for drawsaid dies and means for turning it during its passage, substantially as described.

2. A machine for helically grooving tubes, comprising a table, die-holders fixed thereon each having a central hole, dies adjustably held in said holders and projecting into said a tube through said dies and means for turning it during its passage, substantially as described.

' 3. A machine for helically grooving tubes, comprising atable, die-holders fixed thereon each having a stationary member provided and an oscillatory member, dies adjusted by said oscillatory member, means for drawing a tube through said dies and means for turning it during its passage, substantially as described.

4. A machine for helically grooving tubes, comprising a table, die-holders fixed thereon each having a stationary member provided with a central hole, and an oscillatory member having grooves, dies engaging said camgrooves and adjustable thereby, means for drawing a tube through said dies and means for turning it during its passage, substantially as described.

5. A machine for helically grooving tubes, comprising a table, die-holders fixed thereon each having a stationary member provided with a central hole, a worm, and an oscillatory member having a segment of worm-gear engaged by said worm, and cam-grooves, dies engaging said grooves and adjustable thereby, means for drawing a tube through said dies and means for turning it during its passage, substantially as described.

6. In a machine for helically grooving tubes, a table, a die-holder fixed thereon having a stationary member provided with a central hole, dies in said holder projecting into said hole, an oscillatory member engaging and operating said dies, and means for moving a tube lengthwise through said hole and for turning the tube during its movement, substantially as described.

7. In a machine for helically grooving tubes, a table, a die-holder fixed thereon having a stationary member provided with a central hole and a worm, dies in said holder projecting into said hole, an oscillatory member having a segment of a worm-gear engaged by said worm and cam-grooves engaged by said dies, and means for moving a tube lengthwise through said hole and for turning the tube during its movement, substantially as described.

8. In a machine for helically grooving tubes, a table, a die-holder fixed thereon and comprising a stationary member having a central hole, dies reciprocably mounted thereon and having lugs, a worm, able stop, an oscillatory member having cam-slots engaged by the lugs of said dies, a segment of a worm-gear engaged by said worm and adjustable stops adapted to engagethe stops on the stationary member, substantially as described.

In testimony whereof I have signed my name in the presence of the subscribing witnesses.

ROBERT CHARLES MONTEAGLE.

Witnesses:

D. C. Fox, B. L. MOLITOR.

an adjust- 

